Responses to loud auditory stimuli indicate that movement-related activation builds up in anticipation of action
Journal of Neurophysiology. 2013-02-15; 109(4): 996-1008
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1. J Neurophysiol. 2013 Feb;109(4):996-1008. doi: 10.1152/jn.01119.2011. Epub 2012
Responses to loud auditory stimuli indicate that movement-related activation
builds up in anticipation of action.
Marinovic W(1), de Rugy A, Lipp OV, Tresilian JR.
(1)Perception Lab, School of Psychology, Univ. of Queensland, St Lucia 4072,
Brisbane, QLD, Australia.
J Neurophysiol. 2015 May 1;113(9):3453-4.
J Neurophysiol. 2015 May 1;113(9):3455-6.
Previous research using a loud acoustic stimulus (LAS) to investigate motor
preparation in reaction time (RT) tasks indicates that responses can be triggered
well in advance of the presentation of an imperative stimulus (IS). This is
intriguing given that high levels of response preparation cannot be maintained
for long periods (≈ 200 ms). In the experiments reported here we sought to assess
whether response-related activation increases gradually over time in simple RT
tasks. In experiment 1, a LAS was presented at different times just prior to the
presentation of the IS to probe the level of activation for the motor response.
In experiment 2, the same LAS was presented at different times after the
presentation of the IS. The results provide evidence that response-related
activation does increase gradually in anticipation of the IS, but it remains
stable for a short time after this event. The data display a pattern consistent
with the response being triggering by the LAS, rather than a reaction to the IS.
PMID: 23175800 [Indexed for MEDLINE]